JP2001142134A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera using a capacitor having a high efficiency in terms of space as a strobe light charging capacitor, and also, having a simple pressure plate holding structure. SOLUTION: The flat type capacitor 15 is used for charging the strobe light emission, and the capacitor 15 is stored in a storing room 11a behind the pressure plate 5 inside a rear cover 11, the pressure plate 5 is fixed to the surface of the capacitor 15 in the thickness direction by bonding. When the rear cover 11 is put in a closed state, an energizing force by the compression of the capacitor 15 is applied to the pressure plate 5, then, the rear side of a film 90 is pressed by the pressure plate 5, then, the flat state of the film is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of a strobe light emission charging capacitor and a holding structure of a pressure plate in a camera having a built-in strobe device.

[0002]

2. Description of the Related Art In a conventional camera with a flash light emitting device (strobe device), a cylindrical aluminum electrolytic capacitor is used as a capacitor for charging a strobe light. This cylindrical capacitor is configured by winding a cathode foil and an anode foil having a dielectric formed of aluminum oxide, and electrically connecting the anode foil and the cathode foil with an electrolytic solution. Since the capacitor capacity per unit volume is large, it is particularly suitable as a capacitor for strobe light emission and has been used conventionally. FIG.
FIG. 2 is a perspective view of a cylindrical capacitor applied to the conventional camera.

However, this cylindrical capacitor 95
Since the capacitor is formed by winding the electrode foil, the outer shape becomes cylindrical. Further, when the capacitor is manufactured, the core is wound around the core and manufactured, so that the space of the core is inevitably formed, and the shape cannot be reduced in size. Further, the capacitor 95 is characterized in that the electrode terminal can be taken out only from the upper side (the same applies to the lower part) of the cylinder, and cannot be taken out from the side face, in terms of structure.

[0004] In recent years, there has been a demand for a camera that is smaller and thinner as well as improving the photographing performance. However, since the conventional camera uses the cylindrical capacitor 95 because of the advantage that the capacitor capacity is large as described above, if a capacitor is structurally installed at a corner of the camera, a wasteful portion ( Space) had occurred. In addition, it is difficult to reduce the diameter of the circle because of the method of manufacturing the capacitor. As a result, there have been disadvantages such as the downsizing of the camera and the inability to realize a camera having an easy-to-use camera body shape.

Therefore, conventionally, when the above-mentioned cylindrical condenser 95 is incorporated in the camera body of a camera with a flash device, in order to minimize dead space, for example, a structure in which the condenser 95 is housed in a grip portion of the camera body. Was adopted.

FIG. 10 is a cross-sectional view showing the arrangement of a conventional camera with a strobe device, and FIG.
It is B sectional drawing. In the camera with a flash device, as shown in FIG. 10 and the like, a lens barrel 82 is provided in an opening 81b at the center on the front side of the camera body 81, and a grip 81a side of the camera body 81 with the lens barrel 82 interposed therebetween. A patrone chamber 83, a driving power supply battery 87, and a cylindrical strobe light emission charging capacitor 95 along the patrone chamber axis are provided (on the right side as viewed from the rear). A spool chamber 84 is provided on the opposite side (left side as viewed from the back) of the grip 81a, and a flash emission section 89 and a finder section 88 are provided on the upper portion of the camera body. A pressure plate 85 is provided on the back of the film 90 at the center rear of the camera body 81.
And a pressing leaf spring 86 are provided.

[0007]

As in the case of the above-mentioned conventional camera with a strobe device, the charging capacitor 95 is used.
Is accommodated in the grip portion 81a of the camera body 81, which is effective in reducing the size of the entire camera body. However, since the cylindrical capacitor 95 is housed, the grip portion is made smaller and the portability is not sufficiently improved.

Further, even if the charging capacitor 95 is to be accommodated in a place other than the grip portion, it is difficult to make the camera compact and easy to use because of its cylindrical shape.

On the other hand, a pressing plate spring 86 for pressing and pressing the pressing plate is required at the rear of the pressing plate 85 for pressing the back surface of the film 90, and a space for providing the pressing plate 86 is also required. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a camera in which a capacitor having a high space efficiency is applied as a strobe light emission charging capacitor, and at the same time, a pressure plate holding structure is simple. The purpose is to do.

[0011]

According to a first aspect of the present invention, there is provided a camera having a built-in strobe device or a strobe device which can be used with a strobe device. And the pressure plate is pressed and held by the capacitor.

According to a second aspect of the present invention, there is provided a camera having a built-in strobe device or usable with a strobe device, a pressure plate for guiding a film, a flat capacitor for charging a strobe light, and the capacitor. And a back lid capable of incorporating the pressure plate, and the pressure plate is pressed and held by the condenser incorporated in the rear lid.

According to a third aspect of the present invention, in the camera according to the second aspect, one of a plurality of flat capacitors having different capacities can be selectively housed in the rear lid.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a camera according to an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view taken along line AA of FIG. FIG. 3 is an exploded perspective view of a condenser and a pressure plate incorporated in the camera, and FIG.
It is a longitudinal section of the above-mentioned capacitor.

In the camera of this embodiment, FIGS.
As shown in FIG.
b, a lens barrel 2 inside, a patrone chamber 3 and a driving power source battery 7 in a right grip portion 1a of the camera body 1 with the lens barrel 2 interposed therebetween, and a side opposite to the grip 1a (from the back side). A spool chamber 4 is disposed on the left side (as viewed from the left). Further, a finder section 8 is provided at an upper portion of the camera body 1,
A strobe light emitting unit 9 is provided. On the back side of the camera body 1, a rear cover 11 that can be opened and closed is provided with a support shaft 11.
It is rotatably supported via c.

The rear lid 11 is provided with a condenser storage chamber 11a.
In the storage chamber 11a, a strobe light emission charging capacitor 1 having a thickness t to which the pressure plate 5 is adhered and held is provided.
5 are stored.

The capacitor 15 is an electrolytic capacitor in which an anode foil 15c and a cathode foil 15d are overlapped and folded, and sealed together with an electrolyte solution 15e in a film-like package, and has a flat shape. The volume of the capacitor 15 having the width a, the length b, and the thickness t is substantially equal to the volume of the diameter d and the length 1 of the conventional cylindrical capacitor 95 shown in FIG. It has enough capacity to store the necessary light emission energy as a strobe light emission charge capacitor. The capacitor 15 has flexibility and can be compressed and elastically deformed in the thickness t direction. Note that a connection terminal 15a is provided at an end in the length b direction.

The pressure plate 5 is adhered and held on the main body side surface of the capacitor 15. For the adhesion and holding, a double-sided adhesive tape 15 b is stuck on a mark 15 c at a predetermined flat central portion of the capacitor 15. The pressure plate 5 is adhered and held there. The bonded pressure plate 5 is supported so as to be elastically displaceable in the thickness t direction of the capacitor 15. The above sign 15c
Is pre-printed on the package.

It is also possible to use an elastic adhesive such as silicone rubber instead of the double-sided adhesive tape 15b. In this case, the adhesive itself is an elastic body, which is effective for pressing and pressing the pressure plate 5.

FIG. 5 is a cross-sectional view showing a state in which the condenser 15 and the pressure plate 5 are incorporated in the rear lid 11, and FIG. 6 is a perspective view of the rear lid 11. FIG. 7 is an enlarged view of a lead wire connection portion of the capacitor 15. Capacitor 15
As shown in FIG. 5, the rear cover 11 is attached with the pressure plate 5 adhered thereto.
Is inserted into the condenser storage chamber 11a. Then, in the terminal connection chamber 11f, the terminal 15a of the capacitor 15 is connected to the lead wire 21 through which the hollow portion 11d of the support shaft is inserted. In the state where the lead wires are connected, the terminal cover 13 and
A rear lid cover 12 having an opening 12a for a pressure plate is put on and fixed to the rear lid 11.

The rear lid 11 assembled in the state shown in FIG. 5 is rotatably mounted on the camera body 1 via the support shaft 11c. A locking portion 11e is provided at an end opposite to the support shaft portion 11c, and is locked to the camera body 1 in the closed state by the locking portion 11e.

In the camera of the present embodiment configured as described above, as shown in FIG. 1, the camera body 1 is assembled into a rectangular parallelepiped shape in which the left grip portion 1a (as viewed from the back) does not project. .

When the rear cover 11 is closed, the film 90
The pressure plate 5 abuts on the back surface of the capacitor 15, but the pressure plate 5 has an urging force F (FIG. 5) due to the elastic force in the thickness t direction of the capacitor 15.
) Acts, the film 90 is pressed with an appropriate force, and positioning in the optical axis direction and flattening are performed.

At the time of flash photography, electric charge for flash emission is performed by the condenser 15 and flash emission of the flash emission unit 9 is performed.

FIG. 4 (A) shows the shape of a vertical sectional view of the package of the flash light emitting charge capacitor 15.
As a modification, the upper and lower edges are sealed as shown in FIG. 4B or FIG. 4C as a modification to the shape in which the electrodes and the electrolyte are sealed in a tubular package as shown in FIG. A package-shaped capacitor that is sealed by the portions 16e and 17e is also applicable.

Further, the condenser 15 for strobe light emission charge applied to the camera of the above-described embodiment has a substantially maximum length b that can be stored in the capacitor storage chamber 11a of the rear lid 11. As a modification, a capacitor 15 'having a capacitor capacity corresponding to the amount of strobe light emission of the corresponding camera and having a shorter length b' shown in FIG. 8 can be stored in the capacitor storage chamber 11a. is there.

The rear cover 11 of the camera according to the above embodiment is attached to the camera body 1 so as to be openable and closable. However, the present invention is not limited to this, and is applied to a camera to which an automatic loading / unloading type film cartridge is applied. A similar structure for accommodating a flat capacitor can be adopted for the non-openable / closable rear lid.

Further, even in a camera employing an external strobe device instead of the strobe light emitting portion incorporated in the camera of the present embodiment, a flat capacitor similar to the camera of the present embodiment is housed, A structure in which the pressure plate is held by the capacitor can be employed.

As described above, according to the camera to which the present embodiment or the modification is applied, the pressure plate 5 is held by the flat condenser 15 housed in the rear lid 11,
Since the pressure plate 5 can be pressed by the capacitor 15, a pressing spring for pressing the pressure plate used in the conventional camera is not required, and the number of components can be reduced.

Also, since the cylindrical strobe light emission charging capacitor used in the conventional camera is not used, the grip portion 1a on the right side (as viewed from the back) of the camera body 1 is necessarily formed in a convex shape. It is not necessary, and even if the camera has a built-in capacitor for strobe light emission charging, the camera body can be formed in a rectangular parallelepiped shape. Further, when a convex shape is required for the grip portion of the camera body, the most appropriate grip shape can be adopted regardless of the shape of the internal storage component.

Based on the cameras of the above embodiments,
(1) A camera having a built-in strobe device or usable with a strobe device, comprising: a flat capacitor for charging strobe light emission; and a pressure plate fixed to the capacitor and guiding a film.

[0032]

As described above, according to the camera of the present invention, in a camera having a built-in strobe device or usable with a strobe device, a flat-shaped capacitor is employed as a strobe emission charging capacitor. By adopting the structure for supporting the pressure plate, the conventional plate spring for pressing the pressure plate becomes unnecessary, and further, it is not necessary to house the conventional cylindrical strobe light emission charging capacitor, and the camera can be made compact.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a camera according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an exploded perspective view of a strobe light emission charging capacitor and a pressure plate applied to the camera of the embodiment.

FIG. 4A is a vertical cross-sectional view of a strobe light emission charging capacitor applied to the camera of the embodiment, and FIGS. 4B and 4C are FIGS. 4A and 4B, respectively. FIG. 10 is a longitudinal sectional view of a capacitor according to a modification of the capacitor shown in FIG.

FIG. 5 is a cross-sectional view showing a state in which a condenser and a pressure plate are incorporated in a rear lid in the camera of the embodiment.

FIG. 6 is a perspective view showing a state in which a condenser and a pressure plate are incorporated in a rear lid in the camera of the embodiment.

FIG. 7 is an enlarged view of a lead wire connecting portion of a capacitor in the camera according to the embodiment.

FIG. 8 is a cross-sectional view showing a modified example of the camera of the embodiment, showing a state in which a small-capacity capacitor is incorporated in a rear lid.

FIG. 9 is a perspective view of a cylindrical capacitor applied to a conventional camera.

FIG. 10 is a cross-sectional view showing an arrangement of a conventional camera with a flash device.

FIG. 11 is a sectional view taken along the line BB of FIG. 10;

[Explanation of symbols]

 5 ... Pressing plate 15 ... Condenser 11 ... Back lid 90 ... Film

Claims (3)

[Claims] 1. A camera having a built-in strobe device or usable with a strobe device, comprising: a pressure plate for guiding a film; and a flat capacitor for charging a strobe light. A camera that presses and holds the camera. 2. A camera having a built-in or usable strobe device, comprising: a pressure plate for guiding a film; a flat capacitor for charging the strobe light; and a rear lid capable of containing the capacitor. A camera comprising: a pressure plate that is pressed and held by the condenser. 3. The camera according to claim 2, wherein one of a plurality of flat capacitors having different capacities can be selectively stored in the rear lid.